update: 환경변수 설정 스크립트 permission 수정

Author: golony6449

.github/workflows/deploy_on_dev.yml

@@ -66,6 +66,7 @@ jobs:
 
       - name: update pyconkr-secretes
         run: |
+          chmod 775 ./update_secrets.sh
          ./update_secrets.sh
 
       - name: Test with Django Test